Muaj ntau ntau txoj hauv kev los npaj cov zaub mov antibacterial ntim zaj duab xis. Ib qho yog los ua cov tshuaj tua kab mob rau hauv cov tshuaj tua kab mob masterbatch, uas yog npaj los ntawm extruding los yog drooling ib txheej ntawm cov tshuaj tua kab mob los yog cov tshuaj tua kab mob masterbatch thiab cov cob, thiab tseem tuaj yeem tsim cov yeeb yaj kiab antibacterial composite los ntawm co-extrusion raws li ib txheej txheej thiab lwm txheej. Lwm qhov yog tau los ntawm txheej los yog evaporating tus neeg saib xyuas cov kab mob ntawm cov yeeb yaj kiab resin.
Rau cov yeeb yaj kiab antibacterial ua los ntawm cov tshuaj tua kab mob masterbatch, vim yog nyias nyias ntawm zaj duab xis nws tus kheej, qhov loj me ntawm cov tshuaj tua kab mob yuav tsum yog me me, thiab cov particle loj faib yuav tsum nqaim los yog cov organic tshuaj tua kab mob uas tuaj yeem ua tau. yaj nyob rau hauv cov resin yuav tsum tau siv. Feem ntau, qhov sib ntxiv ntawm cov tshuaj tua kab mob los yog cov kab mob antibacterial masterbatches tsis muaj qhov cuam tshuam loj rau cov khoom siv ntawm cov yeeb yaj kiab, thiab nws tsis cuam tshuam rau cov khoom luam tawm ntawm cov yeeb yaj kiab. Txawm li cas los xij, nws muaj qee yam cuam tshuam rau lub teeb meem ntawm qee cov yeeb yaj kiab. Yog li ntawd, thaum xaiv cov tshuaj tua kab mob thiab cov kab mob antibacterial masterbatches, xyuam xim rau kev cuam tshuam ntawm kev sib ntxiv ntawm cov tshuaj tua kab mob thiab cov tshuaj tua kab mob antibacterial masterbatches ntawm kev ua haujlwm ntawm cov yeeb yaj kiab, thiab xaiv cov tshuaj tua kab mob tsim nyog los xyuas kom meej qhov ua tau zoo ntawm kev ntim khoom. Ua tau raws li qhov yuav tsum tau siv. Cov khoom ntim khoom siv feem ntau yog LDPE, LLDPE, EVA, cellulose film, edible film, thiab lwm yam.
Rau cov txheej txheem ntawm kev thov lossis evaporating cov tshuaj tiv thaiv kab mob mus rau cov yeeb yaj kiab, cov khoom thaiv kev sib txawv ntawm cov yas sib txawv sib txawv, thiab yog tias lub substrate tsis puas thaum lub sij hawm txheej txheej thiab txheej txheej, nws tseem tuaj yeem cuam tshuam qhov zoo ntawm cov khoom kawg. Cov khoom nto, kev ua tau zoo polarity, nto roughness, feem pua ntawm cov pa oxygen thiab nitrogen atoms ntawm qhov chaw ntawm cov yas zaj duab xis yuav cuam tshuam rau kev sib txuas ntawm cov yeeb yaj kiab thiab cov tshuaj tua kab mob, yog li cuam tshuam rau kev ua haujlwm ntawm cov kab mob. Tsis tas li ntawd, ua ntej txheej txheej los yog evaporating cov tshuaj tua kab mob rau ntawm zaj duab xis, qhov saum npoo ntawm zaj duab xis substrate yuav tsum tau pretreated los txhim kho nws cov av saum npoo av thiab txhim kho lub zog sib txuas. Lub ntim zaj duab xis substrates siv rau txheej lossis evaporation feem ntau suav nrog PET, PA, PVC, BOPP, LDPE, thiab lwm yam.
In addition to meeting the mechanical properties, printing properties, display properties and other properties that packaging materials must have, food antibacterial packaging films all over the world have high requirements for the hygienic properties of food packaging materials. my country's national standard GB-9687 stipulates the hygienic requirements for food packaging materials, requiring the materials to have normal color, no peculiar smell, no peculiar smell, and no foreign matter, and be free from evaporation residues, potassium permanganate consumption, heavy metal content, decolorization experiments, etc. meet the corresponding requirements. The US FDA has also made specific regulations on the composition of food packaging materials, additive specifications, conditions of use, dissolution requirements, requirements for chronic toxicity testing of food packaging materials leaching, and requirements for subchronic toxicity testing.
The compound antibacterial agent used for food packaging, the organic antibacterial agent triazine antifungal agent and the pyridine antibacterial agent compounded in the Japanese market, the compound antibacterial agent triazine antibacterial agent, its antibacterial effect has improved by 3— 4 times. The antibacterial agent of organic antibacterial agent and inorganic antibacterial agent developed by the National Engineering Research Center of Haierke Chemical Engineering Plastics in China overcomes the problem of single function of KFHS series antibacterial agent. In addition, nano-TiO2 can be added to the inorganic silver-based antibacterial agent in the food packaging film to solve the problem that the antibacterial effect of the silver-based antibacterial agent is slow.